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audk/Vlv2TbltDevicePkg/AcpiPlatform/AcpiPlatformHooks.c

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/** @file
Copyright (c) 2004 - 2014, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available under
the terms and conditions of the BSD License that accompanies this distribution.
The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name:
AcpiPlatformHooks.c
Abstract:
ACPI Platform Driver Hooks
--*/
//
// Statements that include other files.
//
#include "AcpiPlatform.h"
#include "AcpiPlatformHooks.h"
#include "Platform.h"
//
// Prototypes of the various hook functions.
//
#include "AcpiPlatformHooksLib.h"
extern SYSTEM_CONFIGURATION mSystemConfiguration;
ENHANCED_SPEEDSTEP_PROTOCOL *mEistProtocol = NULL;
EFI_CPU_ID_MAP mCpuApicIdAcpiIdMapTable[MAX_CPU_NUM];
EFI_STATUS
AppendCpuMapTableEntry (
IN EFI_ACPI_2_0_PROCESSOR_LOCAL_APIC_STRUCTURE *AcpiLocalApic
)
{
BOOLEAN Added;
UINTN Index;
for (Index = 0; Index < MAX_CPU_NUM; Index++) {
if ((mCpuApicIdAcpiIdMapTable[Index].ApicId == AcpiLocalApic->ApicId) && mCpuApicIdAcpiIdMapTable[Index].Flags) {
return EFI_SUCCESS;
}
}
Added = FALSE;
for (Index = 0; Index < MAX_CPU_NUM; Index++) {
if (!mCpuApicIdAcpiIdMapTable[Index].Flags) {
mCpuApicIdAcpiIdMapTable[Index].Flags = 1;
mCpuApicIdAcpiIdMapTable[Index].ApicId = AcpiLocalApic->ApicId;
mCpuApicIdAcpiIdMapTable[Index].AcpiProcessorId = AcpiLocalApic->AcpiProcessorId;
Added = TRUE;
break;
}
}
ASSERT (Added);
return EFI_SUCCESS;
}
UINT32
ProcessorId2ApicId (
UINT32 AcpiProcessorId
)
{
UINTN Index;
ASSERT (AcpiProcessorId < MAX_CPU_NUM);
for (Index = 0; Index < MAX_CPU_NUM; Index++) {
if (mCpuApicIdAcpiIdMapTable[Index].Flags && (mCpuApicIdAcpiIdMapTable[Index].AcpiProcessorId == AcpiProcessorId)) {
return mCpuApicIdAcpiIdMapTable[Index].ApicId;
}
}
return (UINT32) -1;
}
UINT8
GetProcNumberInPackage (
IN UINT8 Package
)
{
UINTN Index;
UINT8 Number;
Number = 0;
for (Index = 0; Index < MAX_CPU_NUM; Index++) {
if (mCpuApicIdAcpiIdMapTable[Index].Flags && (((mCpuApicIdAcpiIdMapTable[Index].ApicId >> 0x04) & 0x01) == Package)) {
Number++;
}
}
return Number;
}
EFI_STATUS
LocateCpuEistProtocol (
IN UINT32 CpuIndex,
OUT ENHANCED_SPEEDSTEP_PROTOCOL **EistProtocol
)
{
UINTN HandleCount;
EFI_HANDLE *HandleBuffer;
ENHANCED_SPEEDSTEP_PROTOCOL *EistProt;
UINTN Index;
UINT32 ApicId;
EFI_STATUS Status;
HandleCount = 0;
gBS->LocateHandleBuffer (
ByProtocol,
&gEnhancedSpeedstepProtocolGuid,
NULL,
&HandleCount,
&HandleBuffer
);
Index = 0;
EistProt = NULL;
Status = EFI_NOT_FOUND;
while (Index < HandleCount) {
gBS->HandleProtocol (
HandleBuffer[Index],
&gEnhancedSpeedstepProtocolGuid,
(VOID **) &EistProt
);
//
// Adjust the CpuIndex by +1 due to the AcpiProcessorId is 1 based.
//
ApicId = ProcessorId2ApicId (CpuIndex+1);
if (ApicId == (UINT32) -1) {
break;
}
if (EistProt->ProcApicId == ApicId) {
Status = EFI_SUCCESS;
break;
}
Index++;
}
if (HandleBuffer != NULL) {
gBS->FreePool (HandleBuffer);
}
if (!EFI_ERROR (Status)) {
*EistProtocol = EistProt;
} else {
*EistProtocol = NULL;
}
return Status;
}
EFI_STATUS
PlatformHookInit (
VOID
)
{
EFI_STATUS Status;
Status = gBS->LocateProtocol (
&gEnhancedSpeedstepProtocolGuid,
NULL,
(VOID **) &mEistProtocol
);
ASSERT_EFI_ERROR (Status);
return Status;
}
/**
Called for every ACPI table found in the BIOS flash.
Returns whether a table is active or not. Inactive tables
are not published in the ACPI table list.
This hook can be used to implement optional SSDT tables or
enabling/disabling specific functionality (e.g. SPCR table)
based on a setup switch or platform preference. In case of
optional SSDT tables,the platform flash will include all the
SSDT tables but will return EFI_SUCCESS only for those tables
that need to be published.
@param[in] *Table Pointer to the active table.
@retval EFI_SUCCESS if the table is active.
@retval EFI_UNSUPPORTED if the table is not active.
**/
EFI_STATUS
AcpiPlatformHooksIsActiveTable (
IN OUT EFI_ACPI_COMMON_HEADER *Table
)
{
EFI_ACPI_DESCRIPTION_HEADER *TableHeader;
TableHeader = (EFI_ACPI_DESCRIPTION_HEADER *) Table;
if (TableHeader->Signature == EFI_ACPI_2_0_STATIC_RESOURCE_AFFINITY_TABLE_SIGNATURE) {
}
if ((mSystemConfiguration.ENDBG2 == 0) && (CompareMem (&TableHeader->OemTableId, "INTLDBG2", 8) == 0)) {
return EFI_UNSUPPORTED;
}
return EFI_SUCCESS;
}
/**
Update the GV3 SSDT table.
@param[in][out] *TableHeader The table to be set.
@retval EFI_SUCCESS Returns Success.
**/
EFI_STATUS
PatchGv3SsdtTable (
IN OUT EFI_ACPI_DESCRIPTION_HEADER *TableHeader
)
{
UINT8 *CurrPtr;
UINT8 *SsdtPointer;
UINT32 Signature;
UINT32 CpuFixes;
UINT32 NpssFixes;
UINT32 SpssFixes;
UINT32 CpuIndex;
UINT32 PackageSize;
UINT32 NewPackageSize;
UINT32 AdjustSize;
UINTN EntryIndex;
UINTN TableIndex;
EFI_ACPI_NAME_COMMAND *PssTable;
EFI_PSS_PACKAGE *PssTableItemPtr;
ENHANCED_SPEEDSTEP_PROTOCOL *EistProt;
EIST_INFORMATION *EistInfo;
EFI_ACPI_CPU_PSS_STATE *PssState;
EFI_ACPI_NAMEPACK_DWORD *NamePtr;
//
// Loop through the ASL looking for values that we must fix up.
//
NpssFixes = 0;
SpssFixes = 0;
CpuFixes = 0;
CpuIndex = 0;
CurrPtr = (UINT8 *) TableHeader;
EistProt = NULL;
for (SsdtPointer = CurrPtr; SsdtPointer <= (CurrPtr + ((EFI_ACPI_COMMON_HEADER *) CurrPtr)->Length); SsdtPointer++) {
Signature = *(UINT32 *) SsdtPointer;
switch (Signature) {
case SIGNATURE_32 ('_', 'P', 'R', '_'):
//
// _CPUX ('0' to '0xF')
//
CpuIndex = *(SsdtPointer + 7);
if (CpuIndex >= '0' && CpuIndex <= '9') {
CpuIndex -= '0';
} else {
if (CpuIndex > '9') {
CpuIndex -= '7';
}
}
CpuFixes++;
LocateCpuEistProtocol (CpuIndex, &EistProt);
break;
case SIGNATURE_32 ('D', 'O', 'M', 'N'):
NamePtr = ACPI_NAME_COMMAND_FROM_NAMEPACK_STR (SsdtPointer);
if (NamePtr->StartByte != AML_NAME_OP) {
continue;
}
if (NamePtr->Size != AML_NAME_DWORD_SIZE) {
continue;
}
NamePtr->Value = 0;
if (mCpuApicIdAcpiIdMapTable[CpuIndex].Flags) {
NamePtr->Value = (mCpuApicIdAcpiIdMapTable[CpuIndex].ApicId >> 0x04) & 0x01;
}
break;
case SIGNATURE_32 ('N', 'C', 'P', 'U'):
NamePtr = ACPI_NAME_COMMAND_FROM_NAMEPACK_STR (SsdtPointer);
if (NamePtr->StartByte != AML_NAME_OP) {
continue;
}
if (NamePtr->Size != AML_NAME_DWORD_SIZE) {
continue;
}
NamePtr->Value = 0;
if (mCpuApicIdAcpiIdMapTable[CpuIndex].Flags) {
NamePtr->Value = GetProcNumberInPackage ((mCpuApicIdAcpiIdMapTable[CpuIndex].ApicId >> 0x04) & 0x01);
}
break;
case SIGNATURE_32 ('N', 'P', 'S', 'S'):
case SIGNATURE_32 ('S', 'P', 'S', 'S'):
if (EistProt == NULL) {
continue;
}
PssTable = ACPI_NAME_COMMAND_FROM_NAME_STR (SsdtPointer);
if (PssTable->StartByte != AML_NAME_OP) {
continue;
}
EistProt->GetEistTable (EistProt, &EistInfo, (VOID **) &PssState);
AdjustSize = PssTable->NumEntries * sizeof (EFI_PSS_PACKAGE);
AdjustSize -= EistInfo->NumStates * sizeof (EFI_PSS_PACKAGE);
PackageSize = (PssTable->Size & 0xF) + ((PssTable->Size & 0xFF00) >> 4);
NewPackageSize = PackageSize - AdjustSize;
PssTable->Size = (UINT16) ((NewPackageSize & 0xF) + ((NewPackageSize & 0x0FF0) << 4));
//
// Set most significant two bits of byte zero to 01, meaning two bytes used.
//
PssTable->Size |= 0x40;
//
// Set unused table to Noop Code.
//
SetMem( (UINT8 *) PssTable + NewPackageSize + AML_NAME_PREFIX_SIZE, AdjustSize, AML_NOOP_OP);
PssTable->NumEntries = (UINT8) EistInfo->NumStates;
PssTableItemPtr = (EFI_PSS_PACKAGE *) ((UINT8 *) PssTable + sizeof (EFI_ACPI_NAME_COMMAND));
//
// Update the size.
//
for (TableIndex = 0; TableIndex < EistInfo->NumStates; TableIndex++) {
EntryIndex = EistInfo->NumStates - TableIndex - 1;
PssTableItemPtr->CoreFreq = PssState[EntryIndex].CoreFrequency * PssState[EntryIndex].Control;
PssTableItemPtr->Power = PssState[EntryIndex].Power * 1000;
if (PssTable->NameStr == SIGNATURE_32 ('N', 'P', 'S', 'S')) {
PssTableItemPtr->BMLatency = PssState[EntryIndex].BusMasterLatency;
PssTableItemPtr->TransLatency = PssState[EntryIndex].TransitionLatency;
} else {
//
// This method should be supported by SMM PPM Handler.
//
PssTableItemPtr->BMLatency = PssState[EntryIndex].BusMasterLatency * 2;
PssTableItemPtr->TransLatency = PssState[EntryIndex].TransitionLatency * 10;
}
PssTableItemPtr->Control = PssState[EntryIndex].Control;
PssTableItemPtr->Status = PssState[EntryIndex].Status;
PssTableItemPtr++;
}
if (PssTable->NameStr == SIGNATURE_32 ('N', 'P', 'S', 'S')) {
NpssFixes++;
} else {
SpssFixes++;
}
SsdtPointer = (UINT8 *) PssTable + PackageSize;
break;
}
}
//
// N fixes together currently.
//
ASSERT (CpuFixes == (UINT32) MAX_CPU_NUM);
ASSERT (SpssFixes == NpssFixes);
ASSERT (CpuFixes >= SpssFixes);
return EFI_SUCCESS;
}
/**
Update the DSDT table.
@param[in][out] *TableHeader The table to be set.
@retval EFI_SUCCESS Returns EFI_SUCCESS.
**/
EFI_STATUS
PatchDsdtTable (
IN OUT EFI_ACPI_DESCRIPTION_HEADER *TableHeader
)
{
UINT8 *CurrPtr;
UINT8 *DsdtPointer;
UINT32 *Signature;
UINT8 *EndPtr;
UINT8 *Operation;
UINT32 *Address;
UINT16 *Size;
//
// Fix PCI32 resource "FIX0" -- PSYS system status area
//
CurrPtr = (UINT8*) &((EFI_ACPI_DESCRIPTION_HEADER*) TableHeader)[0];
EndPtr = (UINT8*) TableHeader;
EndPtr = EndPtr + TableHeader->Length;
while (CurrPtr < (EndPtr-2)) {
//
// Removed the _S3 tag to indicate that we do not support S3. The 4th byte is blank space
// since there are only 3 char "_S3".
//
if (mSystemConfiguration.AcpiSuspendState == 0) {
//
// For iasl compiler version 20061109.
//
if ((CurrPtr[0] == '_') && (CurrPtr[1] == 'S') && (CurrPtr[2] == '3') && (CurrPtr[3] == '_')) {
break;
}
//
// For iasl compiler version 20040527.
//
if ((CurrPtr[0] == '\\') && (CurrPtr[1] == '_') && (CurrPtr[2] == 'S') && (CurrPtr[3] == '3')) {
break;
}
}
CurrPtr++;
}
CurrPtr = (UINT8*) &((EFI_ACPI_DESCRIPTION_HEADER*) TableHeader)[0];
EndPtr = (UINT8*) TableHeader;
EndPtr = EndPtr + TableHeader->Length;
while (CurrPtr < (EndPtr-2)) {
//
// For mipi dsi port select _DEP.
//
if (mSystemConfiguration.MipiDsi== 1) {
//
// For iasl compiler version 20061109.
//
if ((CurrPtr[0] == 'N') && (CurrPtr[1] == 'D') && (CurrPtr[2] == 'E') && (CurrPtr[3] == 'P')) {
CurrPtr[0] = '_';
break;
}
} else {
if ((CurrPtr[0] == 'P') && (CurrPtr[1] == 'D') && (CurrPtr[2] == 'E') && (CurrPtr[3] == 'P')) {
CurrPtr[0] = '_';
break;
}
}
CurrPtr++;
}
//
// Loop through the ASL looking for values that we must fix up.
//
CurrPtr = (UINT8 *) TableHeader;
for (DsdtPointer = CurrPtr; DsdtPointer <= (CurrPtr + ((EFI_ACPI_COMMON_HEADER *) CurrPtr)->Length); DsdtPointer++) {
Signature = (UINT32 *) DsdtPointer;
switch (*Signature) {
//
// GNVS operation region.
//
case (SIGNATURE_32 ('G', 'N', 'V', 'S')):
//
// Conditional match. For Region Objects, the Operator will always be the
// byte immediately before the specific name. Therefore, subtract 1 to check
// the Operator.
//
Operation = DsdtPointer - 1;
if (*Operation == AML_OPREGION_OP) {
Address = (UINT32 *) (DsdtPointer + 6);
*Address = (UINT32) (UINTN) mGlobalNvsArea.Area;
Size = (UINT16 *) (DsdtPointer + 11);
*Size = sizeof (EFI_GLOBAL_NVS_AREA);
}
break;
default:
break;
}
}
return EFI_SUCCESS;
}
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